Valdemar
Poulsen invents the first magnetic recordings - using magnetized steel
tape as recording medium - the foundation for both mass data storage on
disk and tape and the music recording industry.Loudspeakers invented.

1902

Guglielmo Marconi transmits radio
signals from Cornwall to Newfoundland - the first radio signal across the
Atlantic Ocean.

Warner Brothers Studios invented
a way to record sound separately from the film on large disks and synchronized
the sound and motion picture tracks upon playback - an improvement on Thomas
Edison's work.

1927

NBC starts two radio networks.CBS founded.First television
broadcasts in England.Warner Brothers releases "The Jazz
Singer" the first successful talking motion
picture.

1930

Radio popularity spreads with the
"Golden Age" of radio.First television
broadcasts in the United States.Movietone system of recording film
sound on an audio track right on the film invented.

1934

Joseph
Begun invents the first tape recorder for broadcasting - first magnetic
recording.

1938

Television
broadcasts able to be taped and edited - rather than only live.